Lecture 6 Flashcards
(9 cards)
1
Q
Dansgaard-Oeschger Episodes
A
Sudden warming and then gradual cooling
2
Q
Freeboard
A
Part sea ice above the waterline; which is relative to the overall thickness of ice (10%)
3
Q
Conglomerate Floes
A
Accumulation of smaller floes that have been cemented together
4
Q
Polynas
A
Open water features that occur due to divergence of sea ice
5
Q
Ice drift rate/direction
A
2% of wind speed (due to water drag) and to the right of the wind (Coriolis Effect)
6
Q
Currents and gyres in Arctic
A
Beaufort gyre and transpolar drift current
7
Q
Currents in the Antarctic
A
Circumpolar current
8
Q
How are thaw holes created?
A
With increased temperatures, puddles form on top of sea ice and penetrate through the ice; now it is rotten
9
Q
Floe bergs
A
Large, thick MYI sea ice flows
